Sliding door.



PATENTED SEPT. 25, 1906.

W. J. ARNOLD. SLIDING DOOR.

APPLICATION FILED MAY 17, 1906.

Y T T w D V a V I ATTEsT.

UNITED STATES PATENT OFFICE.

WALTER J. ARNOLD, OF CLEVELAND, OHIO, ASSIGNOR OF ONE-HALF TO DANIEL R. CANNON, OF CLEVELAND, OHIO.

SLIDING DOOR- To all whom it may concern:

Be it known that I, WALTER J. ARNOLD, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Sliding Doors; and I do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention consists in an improvement in sliding doors, and is especially adapted to be used in fire-doors where automatic closing is desired in case of danger from fire.

In the accompanying drawings, Figure 1 is a front elevation of a door containing my invention and shown as open, and Fig. 2 is a cross-section of Fig. '1 on line 00 00. an enlarged cross-section of a portion of the door and the rails and means for supporting the door in a rolling position. Fig. 4 is a detail showing the fusible means for holding the door open, all as hereinafter fully described.

As thus shown, A represents a wall in a building, and B the opening for the door D.

C represents tracks arranged to suspend the door therefrom on rolling supports or wheels E, and F represents side rails along the top of the door, in which wheels or rollers E are mounted. Suitable metallic casings or boxes d are set into said rails from the bottom, and rollers E have their bearings in the sides of said boxes and run on the metallic facings c of the tracks or rails C. Said rails C are set apart laterally just far enough to permit the body proper of the door to slide between and which thus also serve as guides for the door in opening and closing, the same being evenly balanced on the two sets of rollers E on its opposite sides. An inner lining G is shown on the door or as a part thereof, and said lining abuts against the bottom of the inner of the two rails C, so as to make a fairly close fit at this point and to serve also. in a measure to balance the door on its rollers.

If preferred, all the supports for the door may be of metal, and the door itself may be wholly or in part of fireproof material and in this instance is shown as supported at such inclination on rails or tracks C that it will automatically close when released. To this Specification of Letters Patent.

Application filed May 17, 1906- Serial No 317,332.

Fig. 3 is- Patented Sept. 25, 1906.

end the rails C are inclined between their ends, and straps g at intervals serve as supports for said rails from wall A.

To the end that the door may be released in case of danger from fire and close by gravity I employ a fusible hook H or its equiva lent, and the hook may be made to fuse at any dangerous temperature. As shown, the hook engages a loop or ring h, which also may be fusible. Any such connection for temporarily holding the door open may be used.

Itwill be seen that the inner lining or reinforcement G of the door comes beneath the inner track or rail C, and thus checking any tendency of the door to tilt upward on its rollers when pushed at either edge, as well as making a practically tight closure for the door. Any suitable fireproofing may be em; ployed for the door.

The advantage of extending the door bodily above rail C is apparent in this that it makes the door serve as its own guide and enables the use of plain rails and bars with simple and relatively cheap rollers and affords a construction which any person of ordinary skill can erect. Furthermore, the mounting is such that no part can get mislaced by use or careless handling.

IVhat I claim is v 1. A sliding door having bars along each side at its top, boxes in said bars and rollers mounted in said boxes, in combination with rails upon which said door is mounted and forming a track for said rollers, and an inner reinforcement on the side of the door having its edge overlapping the lower edge of the inner of said bars.

2. In sliding doors, a double inclined track, in combination with a door mounted between the sides of said track and extending bodily above the same, bars on the sides of the door over said track and rollers in said bars riding on the track, and a fusible detaining attachment to hold the door open.

In testimony whereof I sign this specification in the presence of two witnesses.

WALTER J. ARNOLD.

Witnesses:

R. B. MOSER, C. A. SELL. 

